--- title: "Pad-Mounted Switchgear (Ring Main Unit) | Entogo" description: "Pad-mounted load-break switchgear (ring main unit) for underground medium-voltage distribution — 15/25/38 kV class, 200/600 A, dead-front, with SF6 or…" url: https://entogo.ca/products/pad-mounted-switchgear-rmu/ lang: en type: website image: https://entogo.ca/_astro/Entogo-Gas-Fully-Insulated-Fully-Sealed-Ring-Main-Unit.BUgYaOBQ.png alternates: en: https://entogo.ca/products/pad-mounted-switchgear-rmu/ fr-CA: https://entogo.ca/fr/products/pad-mounted-switchgear-rmu/ es: https://entogo.ca/es/products/pad-mounted-switchgear-rmu/ ar: https://entogo.ca/ar/products/pad-mounted-switchgear-rmu/ site: https://entogo.ca/ llms: https://entogo.ca/llms.txt --- Home › Products › Switchgear & Distribution › Pad-Mounted Switchgear (Ring Main Unit) Switchgear & Distribution # Pad-Mounted Switchgear (Ring Main Unit) 15 / 25 / 38 kV class · 200 / 600 A ![Entogo pad-mounted ring main unit load-break switchgear, dead-front](https://entogo.ca/_astro/Entogo-Gas-Fully-Insulated-Fully-Sealed-Ring-Main-Unit.BUgYaOBQ_1CzHVw.webp) Overview Pad-mounted load-break switchgear (ring main unit) for underground medium-voltage distribution — 15/25/38 kV class, 200/600 A, dead-front, with SF6 or SF6-free fault-interrupting ways for utility loops, campuses and data centers, 60 Hz. Designed to IEC 62271-200 and ANSI C57.12.28; UL/CSA certifiable. Entogo designs and builds the Pad-Mounted Switchgear (Ring Main Unit) in its own factory with a vertically integrated supply chain: this product ships in 16–24 weeks (new UL or CSA certification can extend that, within a guaranteed 36-week worst case), and every Entogo product carries a minimum 36-month manufacturer warranty. This **pad-mounted load-break switchgear** — a ring main unit (RMU) in IEC terms — is built to the North-American underground-distribution convention: a dead-front, tamper-resistant cabinet set on a pad, with 2 to 6 switch and fault-interrupter ways at **200 or 600 A** for **15 / 25 / 38 kV class** loops at 60 Hz. It is the form NA utilities reach for when undergrounding feeders and building campus, hospital and data-center loops. Interruption is available with SF6 or SF6-free insulation (vacuum plus an eco-gas or solid-dielectric medium) for sealed-for-life, low-maintenance service, and the unit is distribution-automation ready with optional motor operators, sensors and a SCADA interface. Designed and built to **IEC 62271-200** and **ANSI C57.12.28** enclosure integrity, with UL / CSA certification available on request. ## Key features - Pad-mounted, dead-front load-break switchgear (RMU) — the North-American underground-distribution alternative to the IEC ring main unit, with 2 to 6 switch / fault-interrupter ways. - SF6 or SF6-free (vacuum plus eco-gas or solid dielectric) interruption for low-maintenance, sealed-for-life operation. - Designed and built to IEC 62271-200 and ANSI C57.12.28 enclosure integrity, 60 Hz — UL / CSA certification available on request. - Tamper-resistant NEMA 3R pad-mounted enclosure, ANSI 70 green, for street-level utility and campus loops. - Distribution-automation ready — motor operators, sensors and SCADA interface optional. Custom-engineered · built to order [Get a quote](https://entogo.ca/contact/) Lead time 16–24 weeks Order now for estimated delivery Jan 2027 – Mar 2027. Certification / testing may extend this per the standard and scope. Quality & certifications - ![UL safety certification mark](https://entogo.ca/_astro/Entogo-UL-Underwriters-Laboratories-North-America-Safety-Certification.BoQ45DeX_248O3C.webp) - ![CSA certification mark](https://entogo.ca/_astro/Entogo-CSA-Canadian-Standards-Association-Safety-Certification.CY1FySDR_Z11vFCD.webp) - ![CE European Conformity marking](https://entogo.ca/_astro/Entogo-CE-European-Conformity-Marking.xJPMJKcl_1wU1NT.webp) - ![ISO 9001 quality management mark](https://entogo.ca/_astro/Entogo-ISO-9001-Quality-Management-System-Certification.DbscJvvM_47kvy.webp) - ![ISO 14001 environmental management mark](https://entogo.ca/_astro/Entogo-ISO-14001-Environmental-Management-System-Certification.DXOTPjd4_Z4rpDm.webp) - ![IEC CB Scheme mark](https://entogo.ca/_astro/Entogo-CB-Scheme-IEC-International-Electrical-Certification.CPXJ4xZK_aV0YT.webp) Built under audited ISO quality systems and to ANSI/IEEE & IEC standards. Product-level UL (cULus) / CSA certification available on request. [See all certifications](https://entogo.ca/certifications/) ## Specifications Pad-Mounted Switchgear (Ring Main Unit) specifications | Specification | Value | | --- | --- | | Applicable standards | IEC 62271-200 · ANSI C57.12.28 (pad-mounted enclosure integrity) · IEEE C37.74 | | Type | Pad-mounted switchgear / ring main unit (RMU), dead-front | | Rated max voltage | 15 / 25 / 38 kV class | | Continuous / ways | 200 A or 600 A ways; 2 – 6 ways per unit | | Interrupting | Load-break switch + fault interrupter (12.5 – 25 kA) | | Insulation | SF6, or SF6-free (vacuum + eco-gas / solid dielectric) | | Frequency | 60 Hz | | Connection | Dead-front loadbreak / deadbreak elbows | | Enclosure | Pad-mounted, tamper-resistant, NEMA 3R, ANSI 70 green | | Arc-resistant | Optional per IEC 62271-200 | Glossary: [Ring main unit](https://entogo.ca/glossary/#ring-main-unit) [Dead-front vs. live-front](https://entogo.ca/glossary/#dead-front-live-front) [60 Hz vs. 50 Hz](https://entogo.ca/glossary/#60-hz-vs-50-hz) ## Applications - Utility underground distribution loops and undergrounding - Campus, hospital and data-center medium-voltage loops - EV-charging and renewable-energy interconnection - Industrial and commercial MV switching points Payment & financing Flexible payment and project financing is available for qualified projects — milestone-based plans, reduced upfront terms and third-party financing. Entogo is the equipment supplier, not a lender; all options are subject to credit review and a signed agreement. [See payment options](https://entogo.ca/payment-options/) After-sales Backed by Entogo lifecycle service — technical support, spare parts and a minimum 36-month warranty (well beyond the industry norm; up to 10 years on major power equipment, confirmed per contract). Our team responds to every request within one business day. [After-sales support](https://entogo.ca/support/) [Track an order](https://entogo.ca/support/order-status/) FAQ ## Common questions - **Is a "ring main unit" the same as pad-mounted switchgear in North America?**: They overlap. "Ring main unit (RMU)" is the IEC term; in North America the dominant product family for the same duty is pad-mounted switchgear — dead-front, 200/600 A ways, set on a pad for underground loop distribution. This unit is built to that NA convention. - **Is an SF6-free version available?**: Yes. The load-break and fault-interrupting functions are available with SF6 or with SF6-free insulation (vacuum interruption plus an eco-gas or solid-dielectric medium) for utilities phasing out SF6. - **What ratings and standards apply?**: 15 / 25 / 38 kV class, 200 / 600 A, 2 – 6 ways, 12.5 – 25 kA interrupting, 60 Hz. Designed to IEC 62271-200 and ANSI C57.12.28; UL / CSA certification available on request. Distribution ## Related products [![Entogo metal-clad medium-voltage switchgear with drawout vacuum circuit breakers](https://entogo.ca/_astro/Entogo-Armored-Removable-AC-Metal-Enclosed-Switchgear.DuhYnxGM_1rPQtT.webp) Distribution ### Metal-Clad Switchgear (Drawout MV) Metal-clad medium-voltage switchgear with drawout vacuum circuit breakers for 5/15/27/38 kV class systems, 60 Hz — compartmentalized, insulated-bus construction up to 4000 A and 50 kA, with optional arc-resistant rating. Designed to ANSI/IEEE C37.20.2; UL/CSA certifiable. View](https://entogo.ca/products/metal-clad-switchgear/)[![Entogo dead-front low-voltage switchboard, UL 891 type](https://entogo.ca/_astro/Entogo-GGD-AC-Low-Voltage-Switchgear.zdOCIT9Q_6cFiL.webp) Distribution ### Low-Voltage Switchboard (UL 891) A dead-front low-voltage switchboard for ≤ 600 V, 60 Hz service-entrance and distribution — up to 6000 A and 200 kA, with group-mounted molded-case or insulated-case breakers, for commercial, institutional and industrial buildings. Designed to UL 891; UL (cULus) / CSA certifiable. View](https://entogo.ca/products/low-voltage-switchboard/)[![Entogo metal-enclosed load-interrupter medium-voltage switchgear](https://entogo.ca/_astro/Entogo-Box-Type-Fixed-Metal-Enclosed-Switchgear.Cc7QCP4l_1y87ft.webp) Distribution ### Metal-Enclosed Load-Interrupter Switchgear Metal-enclosed load-interrupter switchgear for 15 / 27 / 38 kV class medium-voltage systems, 60 Hz — fixed-mounted load-break switches with power-fuse protection in a compact steel enclosure, for compact substations, primary service entrance and MV isolation. Designed to ANSI/IEEE C37.20.3; UL / CSA certifiable. View](https://entogo.ca/products/metal-enclosed-switchgear/) Request a quote ## Talk to engineering about the Pad-Mounted Switchgear (Ring Main Unit). 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